Finbarr Calamitous

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Professor Calamitous
Professor Calamitous
The Adventures of Jimmy Neutron: Boy Genius character
Background information
Portrayed by
Portrayed by
Voiced by Tim Curry
First appearance "Professor Calamitous, I Presume"
Last appearance Nicktoons: Attack of the Toybots
Character information
Full name Finbarr Calamitous
Species Human
Other names
Relatives Beautiful Gorgeous (daughter)
Allies Sheldon J. Plankton, Denzel Crocker, Vlad Plasmius, King Goobot V, Ooblar, the Junkman, Baby Eddie, Eustace Strytch, Grandma Taters
Enemies Jimmy Neutron, Carl Wheezer, Sheen Estevez, Jet Fusion, Goddard, Cindy Vortex, Libby Folfax, Timmy Turner, SpongeBob SquarePants, Danny Fenton

Professor Finbarr Calamitous is a recurring villain from The Adventures of Jimmy Neutron: Boy Genius. He is the father of Beautiful Gorgeous' father and a former student of Ms. Fowl (despite his age, though he could've been held back several times), and is Jimmy's arch-nemesis. He may be in his 50s, 60s, or in his 70s.



Calamitous appears in "Professor Calamitous, I Presume", "Operation: Rescue Jet Fusion", "The Great Egg Heist", "Lights! Camera! Danger!", "My Big Fat Spy Wedding", "Jimmy Timmy Power Hour 2: When Nerds Collide", and The League of Villains.

Calamitous is a tiny, near-sighted, eccentric, old genius, who is one of the most brilliant evil minds on the planet, though he has a bad habit of never finishing what he starts. Calamitous is determined to get Jimmy to finish his projects for him because he can't finish them himself.

Professor Calamitous was once a brilliant little boy who never finished anything, from food to even his sentences. His inability to finish things lead him to never finishing his homework as noted by Ms. Fowl, which strengthens the idea he was held back. Later he overcomes this and is heard completing sentences after he took a self-help class (as seen in "Operation: Rescue Jet Fusion", "The Great Egg Heist", and "When Nerds Collide"). Calamitous also seems to like Ms. Fowl despite his age. He often wears a lab coat, long black gloves, and eyeglasses. Calamitous has gray hair (despite being bald).

Calamitous also has a robot bodyguard and disguise called the CalamiBot which resembles an action figure that Sheen plays with. He appears as quite an odd character.

Video games

Calamitous is also the final boss in Nicktoons Unite! and Nicktoons: Attack of the Toybots, where he faced (besides Jimmy and Timmy) Danny, SpongeBob and other heroes. He also appeared in the 2006 PC game Nicktoons Winners Cup Racing as an unlockable character.


  • At a total of eleven appearances across both the show and the video games, Calamitous is considered the main Jimmy Neutron villain.
  • Even after taking the self-help class, there are still times where Calamitous may not finish things, as he admits not to finishing the class. Since he also stated that he meant to finish, it's possible that after "Operation: Rescue Jet Fusion", he did make up for the session he missed and has now completely overcome it.

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